ATDD (analog tune and digital display) FM/AM/SW radio Worldwide FM band support from 64 to 109 MHz with 5 default sub-bands:

Transcription

1 Si48/6 DEMO BOARD USER S GUIDE 1. Features ATDD (analog tune and digital display) FM/AM/SW radio Worldwide FM band support from 64 to 109 MHz with 5 default sub-bands: FM MHz (Demo Board Default) FM MHz FM MHz FM MHz FM MHz (Demo Board Default) Worldwide AM band support from 504 to 1750 khz with 5 default sub-bands: AM khz (Demo Board Default) AM khz (Demo Board Default) AM khz AM khz AM khz Worldwide SW band support from. to 8.5 MHz with 16 default sub-bands: SW MHz (Demo Board Default, for Si486 only) SW MHz SW MHz (Demo Board Default, for Si486 only) SW MHz SW MHz (Demo Board Default, for Si486 only) SW MHz SW MHz (Demo Board Default, for Si486 only) SW MHz SW MHz (Demo Board Default, for Si486 only) SW MHz SW MHz (Demo Board Default, for Si486 only) SW MHz SW MHz (Demo Board Default, for Si486 only) SW MHz SW15 1. MHz (Demo Board Default, for Si486 only) SW MHz Twelve positions band switch or one push button for selecting different band according to the target application. Two AAA battery operations with working voltage down to.0 V Economical potentiometer for frequency tuning replaces more expensive variable capacitor (PVC) Potentiometer and/or push button volume control FM 50 µs or 75 µs (default) de-emphasis 9-level Bass/Treble via push button control for FM 7-level Bass/Treble via push button control for AM/SW FM/AM/SW band indicator and frequency display in LCD 4 matrix keypad interface The frequency range of each band, de-emphasis and AM channel space can be re-configured by host MCU. Rev /11 Copyright 016 by Silicon Laboratories Si48/6-DEMO

2 . Overview This manual describes the operation of the Silicon Labs Si48/6-DEMO Board Rev1.0, October 4, 011. The Silicon Laboratories Si48/6-DEMO Board is designed with the 4-pin SSOP-packaged Si48/6 chip, the revolutionary single chip AM/FM/SW receiver that integrates everything from antenna input to audio output and allows use of common and economical potentiometers to do the frequency tuning. It provides a complete portable analog tune digital display AM/FM/SW radio design. The LCD displays the tuning information. The Si48/6- DEMO is designed with 1-layer PCB, allowing the lowest cost without sacrificing the RF performance. The demo board works with two AAA batteries and working voltage down to.0 V. Rev. 0.1

3 . Description Si48/6-DEMO Figure 1 and Figure shows the physical layout of the board with key components indicated. Figure 1. Si48/6-DEMO Board Top Side in Time Mode Figure. Si48/6-DEMO Board Bottom Side Rev. 0.1

4 Power: BAT1: cells AAA battery compartment Audio Connectors: J5: Stereo audio headphone output Antenna Selections: AM antenna: Ferrite stick antenna for AM J6: SMA connector for AM conductive testing S11: AM antenna selector 1 1-: SMA for AM Conductive Test -: AM Ferrite Antenna J1: BNC connector for FM/ SW conductive testing or FM whip antenna S1: FM antenna selector 1 1-: BNC (J1) -: HP ANT (J5) Radio Band Selection: The demo board provides two methods for selecting the radio band: one is to use the slide switch S, another is to use the POWER/BAND button. S14 determines which method is in use. S14: 1 1-: Use slide switch to select band -: Use push button to select band 4 Rev. 0.1

5 Radio Band Property Setting: S1: 1 1-: Use the keypad to set the band propery via MCU -: Use the tuner default band setting values Audio Output Test Point: For the general specification test, TP is the recommended audio signal test point. The audio test instrument should be connected to TP to get more accurate test results. J5 can also be used as an audio test point, but the test results may not be entirely accurate under some circumstances. 1 GND AOUT Main Components: U1: Silicon Laboratories Si48/6 AM/FM/SW ATDD receiver U: Audio amplifier U: MCU LCD: The digital display of tuning frequency Rev

6 Control Interface: VR1: Frequency tuning wheel VR: Volume control wheel S~S8, S10: The keypad S: Band slide switch for FM, AM, and SW Band definition: 1: FM1 ( MHz), De-emphasis = 75 µs : FM5 (64 87 MHz), De-emphasis = 75 µs : AM1 ( khz), 10 khz spacing 4: AM (5 160 khz), 9 khz spacing 5: SW1 ( MHz) 6: SW ( MHz) 7: SW5 ( MHz) 8: SW7 ( MHz) 9: SW9 ( MHz) 10: SW11 ( MHz) 11: SW1 ( MHz) 1: SW15 (1. MHz) Human Interface: There are seven keys for controlling the demo board as shown below: TREBLE/AL BASS/TMR DE/SPC SETTING DOWN/VOL- UP/VOL+ POWER/BAND Each key can have a different function under each operating condition: Time mode: Radio function is disabled. LCD displays time. Buttons can be used to set time, alarm, etc. FM/AM/SW Radio mode: Tuner IC works in Power Up mode. Radio function is enabled. LCD displays the radio station parameters. Buttons are used to adjust radio settings. The functions of the buttons are summarized in Table 1. The FM/AM/SW radio parameters that can be configured are listed in Table. 6 Rev. 0.1

7 Table 1. Key Function Description Button/Mode Time Mode Tuner Off FM/AM/SW Radio Mode Tuner On POWER/BAND hold Time < 1s None Change between FM, AM, and SW (1 FM band, 1 AM band and 8 SW bands) hold Time > 1s Enable radio Disable radio function and enter Time mode (Radio parameters will be saved to MCU). DE/SPC None FM mode: Change De-emphasis, between 50 µs and 75 µs. AM mode: Change channel space, between 9 khz and 10 khz. BASS/TMR Enter or quit time setting menu. Decrease Bass/Treble level by 1 step. TREBLE/AL UP/VOL+ hold Time < 1s hold Time > 1s DOWN/VOL- hold Time < 1s hold Time > 1s SETTING hold Time < 1s hold Time > 1s Enable or disable the alarm function; enter or quit alarm setting menu. In setting menu, change the current time/alarm parameter by one unit per each press. In setting menu, change the current time/alarm parameter automatically. In setting menu, change the current time/alarm parameter by one unit per each press. In setting menu, change the current time/alarm parameter automatically. None None Increase Bass/treble level by 1 step. In radio setting menu, change the current parameter by one unit per each press. In radio working mode, increase volume 1 step per each press. In radio setting menu, change the current parameter automatically. In radio working mode, increase volume level automatically until to maximum. In radio setting menu, change the current parameter by one unit per each press. In radio working mode, decrease volume 1 step per each press. In radio setting menu, change the current parameter automatically. In radio working mode, decrease volume level automatically until to minimum. In radio setting menu, change the selected item per each press. Quickly return to FM working mode. Rev

8 Table. Radio Configuration Parameters FM Parameter AM Parameter SW Parameter Bass/Treble: 0-8 Default: 4 Digital volume: 0-6 Default: 6 Band top: max 109 MHz Default: 108 MHz Band bottom: min 64 MHz Default: 87.5 MHz Bass/Treble: 1-7 Default: Digital volume: 0-6 Default: 6 Band top: max 1750 khz Default: 1710 khz Band bottom: min 504 khz Default: 5 khz Bass/Treble: 1-7 Default: Digital volume: 0-6 Default: 6 Band top: max 8.5 MHz Default: 6.4/7.6/10/1.5/14./15.9/18/ MHz for SW1 to SW8 respectively Band bottom: min. MHz Default: 5.6/6.8/9./11.45/1.4/15/ MHz for SW1 to SW8 respectively Band range: max MHz Band range: max. MHz Band range: max 1.1 MHz De-emphasis: 50 or 75 µs Default: 75 µs Tone/VOL mode: a-d Default: d Tuning preference: a-d Default: b Channel space: 9 or 10 khz Default: 9 khz Notes: Tone/VOL mode has four selections: Bass/treble mode: no digital volume control, fixed volume level at 59 Digital volume mode: no bass/treble effect, volume levels from 0 to 6 Mixed mode 1: bass/treble and digital volume coexist, volume levels from 0 to 6, scale to 0~59 Mixed mode : bass/treble and digital volume coexist, volume levels from 0 to 6 The Tuning preference of FM has two selections: Preference1: When tuning to adjacent channels, the volume level decreases by db Preference: When tuning to adjacent channels, the volume level remains unchanged The Tuning preference of SW has two selections: Preference1: When tuning to adjacent channels, the volume level decreases by db Preference: When tuning to adjacent channels, the volume level remains unchanged There is no tuning preference selection for AM mode. 8 Rev. 0.1

9 4. Operation The Si48/6-DEMO board, a complete analog tune and digital display radio, provides two major modes of operation: Time mode and FM/AM/SW Radio mode Time Mode Place two AAA batteries into the battery compartment. The board will automatically enter Time mode and display the time. The demo board display in Time mode is illustrated in Figure Time Setting The time default value is 00:00 and can be set to the correct time manually when needed. 1. In Time mode, press the BASS/TMR button to enter the setting menu. The default is to set the minute item first. Press this button again to select the hour item. The selected item flashes.. While the selected item is flashing, press the DOWN/VOL- and UP/VOL+ button to set the desired time.. When you have finished setting the time, press BASS/TMR button to quit the setting menu. The MCU will automatically quit the setting menu if there is no operation within seconds Alarm Setting 1. In Time mode, press the TREBLE/AL button to enable or disable the alarm function and to enter the setting menu automatically when the alarm is enabled. Once you have entered the setting menu, the default is to set the minute item first. Pressing this button again will select the hour item. The selected item flashes.. While the selected item is flashing, press the DOWN/VOL- and UP/VOL+ button to set the desired time.. When you have finished the alarm setting, press TREBLE/AL button to quit the set menu. The MCU will automatically quit the setting menu if there is no operation within seconds. 4. If the alarm is enabled and the alarm setting time is matched, the radio will be automatically turned on after the buzzer sounds for 5 seconds. 5. The radio will be turned off and the demo board will go into sleep mode automatically if there is no operation on the push buttons within 15 minutes; if there is any operation on the push buttons, the autosleep function will be disabled. The radio keeps working throughout this time. Rev

10 4.. FM/AM/SW Radio Mode In time mode, the device will enter FM/AM/SW mode after a long press (hold time > 1s) of the POWER/BAND button or when the alarm time is reached. The LCD displays the following information: band indicator, band frequency indicator, and sleep indicator in case the radio is automatically turned on by the alarm. The demo board display in FM/AM/SW mode is illustrated in Figure. Figure. LCD Display in FM Radio Mode The demo board provides two methods to select the radio band: one is to use the slide switch (S), the other is to use the POWER/BAND push button. S14 determines which method is in use. The demo board also provides two methods to set the band property: one is to use tuner default values, the other is to use the keypad to reconfigure band property value via the MCU. S1 determines which method is in use. If you use the tuner default values, the band property is fixed and cannot be re-configured. Refer to Section "4..1. MCU Setting Band Property for the operation details for setting the band property using the keypad. To operate the demo board, follow these procedures: 1. According to the desired radio band selection method, set S14 to use the slide switch or push button.. According to the desired radio band property, set S1 to use tuner default values or reconfigure the band property.. Hold the POWER/BAND push button (hold time > 1s) or when the alarm time is reached, the device will enter FM/AM/SW mode. 4. Use slide switch S or press the POWER/BAND push button to select the desired band. 5. Refer to section "4..1. MCU Setting Band Property or section "4... MCU Setting Radio Working Mode to reconfigure the band property or radio working mode if necessary. 6. Rotate the tuning wheel and find the desired radio station with the help of the LCD display and/or tuning indicator D1. 7. Rotate the volume control wheel VR and/or press the DOWN/VOL- or UP/VOL+ button to get a comfortable volume. Press the BASS/TMR or TREBLE/AL button to get the desired bass/treble level. Notes: For FM listening, the earphone cable must be connected to the board when S1 is set to HP ANT or an external antenna must be connected to the BNC connector when S1 is set to BNC. For AM listening, the ferrite antenna must be connected to the board and the S11 is set to Ferrite before turning on the radio or switching the band to AM. 10 Rev. 0.1

11 4..1. MCU Setting Band Property The demo board provides the function that the band property can be set by the MCU. The band property includes: Band top Band bottom De-emphasis (only for FM) Channel Space (only for AM) The setting menu is illustrated in Figure 4. To set the band properties, follow these steps: 1. Press the SETTING button to enter the setting menu and select the item to be set. The selected item flashes for 1 second, then automatically switches to its current value.. While the value is flashing, press the DOWN/VOL- or UP/VOL+ button to set the desired value within seconds.. Repeat step 1 and to finish setting the band properties. 4. When the band properties are set, the MCU automatically quits setting menu if there is no operation within seconds. 5. In FM working mode, press the DE/SPC button to set the De-emphasis 50 µs or 75 µs. 6. In AM working mode, press the DE/SPC button to set the Channel Space 9 khz or 10 khz. SETTING MENU: 1 BAND TOP BAND BOTTOM TONE/VOL MODE 4 Tuning preference a Bass/Treble MODE b Dig-Vol MODE c MIX MODE1 d MIX MODE a preference1 b preference Figure 4. Setting Menu Rev

12 4... MCU Setting Radio Working Mode The host MCU can set the radio working mode. The working mode includes: Tone/volume mode (only for FM mode), item in setting menu Tuning preference (only for FM and SW), item 4 in setting menu To set radio working mode, follow these steps: 1. Press the SETTING button to enter the item. The LCD displays the item number st for 1 second, then automatically switches to its mode indication.. Press the DOWN/VOL- or UP/VOL+ button to select the desired mode within seconds.. Repeat step 1 and to set the tuning preference by setting the item When the radio working mode is set, the MCU automatically quits the setting menu if there is no operation within seconds. 1 Rev. 0.1

13 5. Bill of Materials ATDD AM/FM/SW receiver IC Si48/6 with external.768 khz crystal oscillator support LM4910MA Audio amplifier IC TM8795 MCU See Table for details Table. Si48/6-DEMO Board Bill of Materials Rev 1.0 Item Qty Reference Description Value 1 1 C1- C6 C19 C4 C7-4 C44 CAP,SM,060,X7R 0.1 µ C5 C6 CAP,SM,060,X7R 0.47 µ C8 10 CAP,SM,060,COG 100 p 4 1 C CAP,SM,060,COG 10 p 5 4 C8-9 C C5 CAP,SM,060,COG p 6 1 C11 CAP,SM,060,X7R 0 p 7 C0-1 CAP,SM,060,X7R n 8 1 C4 CAP,SM,060,COG p 9 1 C15 CAP,SM,060,X7R 4.7 µ 10 C4 C1 CAP,SM,060,X7R 10 µ 11 1 C1 CAP,SM,110,X7R 47 µ 1 1 C18 CAP,SM,060,X7R 80 p 1 C C7 CAP,SM,110,X7R 0 µ 14 C14 C5 Electrolytic capacitor 100 µ/4 V 15 1 C Electrolytic capacitor 0 µ/4 V 16 R5-6 RES,SM,060 k 17 1 R7 RES,SM, R 18 1 R4 RES,SM, k 19 1 R RES,SM, R 0 R R4 RES,SM, k 1 1 R41 RES,SM, k 1 R RES,SM,060 1 k R1- RES,SM,060 1 M 4 R4 R1 RES,SM,060 1 k 5 1 R4 RES,SM, R 6 1 R1 RES,SM,060 R 7 1 R16 RES,SM,060. k 8 1 R0 RES,SM, k 9 1 R1 RES,SM,060 NP 0 1 R7 RES,SM,060,Tolerance ±1% 10 k 1% 1 1 R9 RES,SM,060,Tolerance ±1% 160 k 1% Rev

14 Table. Si48/6-DEMO Board Bill of Materials Rev 1.0 (Continued) Item Qty Reference Description Value 9 R9-1 R14-15 R8 R R5 RES,SM,060,Tolerance ±1% 0 k 1% 1 R4 RES,SM,060,Tolerance ±1% 0 k 1% 4 1 R6 RES,SM,060,Tolerance ±1% k 1% 5 1 R8 RES,SM,060,Tolerance ±1% 40 k 1% 6 1 R44 RES,SM,060,Tolerance ±1% 47 k 1% 7 1 U1 SI48/6 SSOP4 Si48/6 8 1 U LM4910MA,SO8 LM4910MA 9 1 U TM PIN TM PIN 40 1 Q TRANSISTOR NPN SOT N Q1 TRANSISTOR NPN SOT SC Q TRANSISTOR NPN SOT N906 4 D D4 DIODE,SM,ESD,SOT BAV99 44 B4 B5 B6 FERRITE BEAD,SM,060.5 k/100 M 45 1 B1 FERRITE BEAD,SM,060 NP 46 1 BZ1 BUZZER BUZZER 47 Y1- CRYSTAL.768 khz 48 1 D1 LED LED 49 1 D6 1N4148 1N J5 Stereo earphone jack with switch.5 mm 51 1 L1 RES,SM,060 0R 5 1 L IND,SM, nh 5 1 TP CONN,TH,1x,HDR CONN,TH,1x,HDR 54 1 LCD1 LCD LCD 55 1 J1 BNC VERTICAL BNC for FM testing 56 1 J6 SMA VERTICAL SMA for AM testing 57 1 ANT1 AW ferrite stick antenna 0 µh 58 1 BAT1 BATTERY BOX,AAA* SIZE 59 4 S11-14 One pole two throw switch 60 1 S Single pole twelve throw switch 61 8 S1 S-8 S10 Push button 6 1 VR1 100 k, ±10%,Variable resistor(pot) 100 k 6 1 VR 10k,±0%,Variable resistor(pot) 10 k 14 Rev. 0.1

15 6. Schematics and Gerber B6.5k/100M C6 0.47u C1 n R41 10k C0 n R4 100k R 10R ANT1 MW ferrite antenna R1 1k C 10p Q1 SC9018 J1 MW D BAV99 FM/SW J6 C5 0.47u D4 BAV99 [1] L1 TUNE1 0R/10nH VR1 100k 10% C1 C1 [1] FMI 47u R7 100R C4 p IRQ R4 10k [1] S1: Band property - Tuner default -1 MCU Setting S14: Band Selection - slide switch -1 push button BAND [1] Test point S14 Si48/6-A R0 6k8 C19 C6 C15 Audio output 4.7u C9 C14 100u/4V BAT1 AAA* S R6 k 1% R4 0k 1% R5 0k 1% R15 0k 1% R10 0k 1% R1 0k 1% R11 0k 1% R14 0k 1% R9 0k 1% R8 40k 1% R7 10k 1% R8 0k 1% R9 160k 1% R 0k 1% R44 47k 1% SW15 (1.MHz - MHz) SW1 (17.1MHz - 18MHz) SW11 (15MHz MHz) SW9 (1.4MHz - 14.MHz) SW7(11.45MHz - 1.5MHz) SW5(9.MHz MHz) SW(6.8MHz - 7.6MHz) SW1 (5.6MHz - 6.4MHz) AM (5kHz - 160kHz) AM1 (50kHz kHz) FM5 (64MHz - 87MHz) FM1 (87MHz - 108MHz) GND 14 GND 15 RST 16 SDIO 17 SCLK 18 XTALO 19 XTALI 0 VDD1 1 VDD DBYP NC 4 AOUT U1 AMI 1 NC 11 NC 10 RFGND 9 FMI 8 NC 7 NC 6 BAND 5 TUNE 4 TUNE1 IRQ LNA_EN 1 Aout GND C4 C11 0p 10u C1 VR-A 10u R16 k C18 80p R 1k U 1 IN1 IN SHUTDOWN VO1 VO VO 4 5 GND VDD LM4910MA C 0u C7 0u B5 k5/100m B4 k5/100m J5 C10 C8 [1] FMI C5 100p 100p C4 100u/6.V B1 NC S11 S1 S1 TP R6 k TP1 L 10nH R5 k R 10k R1 NC XTALI Y1.768KHz C8 C9 p p 1 1 [1] BAND LNA_EN [1] RESET LNA_EN TUNE1 [1] SDIO SCLK SHUTDOWN Figure 5. Si48/6-DEMO Board Rev 1.0 Schematic Radio and Audio Portions Rev

16 FM MW SW MCU LCD S7 S UP/VOL+ S8 DOWN/VOL- S10 POWER/BAND S4 DE/SPC S5 BASS/TMR S6 SETTING MENU: 1 BAND TOP BAND BOTTOM TONE/VOL MODE 4 Tuning preference a Bass/Treble MODE b Dig-Vol MODE c MIX MODE1 d MIX MODE C C 0u/4V D6 1N4148 R1 R BZ1 SETTING TREBLE/AL a preference1 b preference R4 1k Q N904 KEY BUZZER SLEEP MODEL NO DRAWN APPD PM MHz KHz MHz SI48/6-DEMO DIVISION Jing Wang DATE DATE October.4.0 COM1 COM COM SEG0 SEG1 SEG SEG SEG4 SEG5 SEG SEG7 11 SEG8 1 SEG9 SEG SEG11 SEG1 SEG BAK XIN XOUT 4 GND 5 VDD1 6 VDD 7 VDD 8 CUP1 9 CUP 10 COM1 11 COM SEG7/IOA4 SEG6/IOA SEG5/IOA SEG4/IOA1 SEG SEG SEG1 SEG1(K1) SEG11(K11) SEG10(K10) SEG9(K9) LCD1 1 COM 1 COM4 14 COM5 15 SEG1(K1) 16 SEG(K) 17 SEG(K) 18 SEG4(K4) 19 SEG5(K5) 0 SEG6(K6) 1 SEG7(K7) SEG8(K8) TEST INT RESET SEG5/IOC4/KI4 SEG4/IOC/KI SEG/IOC/KI SEG/IOC1/KI1 SEG1/IOB4/BZ SEG0/IOB/BZB SEG9/IOB/ELP SEG8/IOB1/ELC KEY_C0 KEY_C1 KEY_C KEY_C KEY_R0 KEY_R1 C41 R1 1M S1 RESET C4 C p C5 p Y.768KHz C7 C40 R 1M D1 LCD_C1 LCD_C LCD_C LCD_S0 LCD_S1 LCD_S LCD_S LCD_S4 LCD_S5 LCD_S6 Tuning indicator R4 Q N906 00R LCD_S7 LCD_S8 LCD_S9 LCD_S10 LCD_S11 LCD_S1 LCD_S1 LCD_C1 LCD_C U C44 C8 [1] [1] [1] SCLK RESET SDIO LCD_S1 LCD_S11 LCD_S10 LCD_S9 LCD_S8 LCD_S7 LCD_S6 LCD_C KEY_R0 KEY_R1 LCD_S0 LCD_S1 LCD_S LCD_S LCD_S4 LCD_S5 [1] KEY_C KEY_C KEY_C1 KEY_C0 BZ SHUTDOWN LCD_S1 XTALI [1] IRQ [1] BZ Figure 6. Si48/6-DEMO Board Gerber Rev 1.0 Schematic MCU Portion 16 Rev. 0.1

17 Figure 7. Si48/6-DEMO Board Gerber Rev 1.0 Rev

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